Encoding low density parity check (LDPC) codes through an...

Telecommunications – Wireless distribution system

Reexamination Certificate

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C455S074000, C455S075000, C455S003030, C714S758000, C714S752000

Reexamination Certificate

active

10883338

ABSTRACT:
An approach is providing for supporting broadcast transmission of low density parity check (LDPC) coded signals. A receiver includes a decoder configured to decode an LDPC signal to output a decoded signal. The decoder is further configured to operate as an encoder; as such, interference cancellation can be implemented by the encoder re-encoded the received decoded signal. The above approach has particular applicability to satellite broadcast systems.

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patent: 2005/0149844 (2005-07-01), Tran et al.
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patent: 2007/0011568 (2007-01-01), Hocevar
patent: 2007/0124644 (2007-05-01), Shen et al.
patent: 1 387 496 (2004-02-01), None
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Japanese Office Communication dated Jul. 13, 2006 in Japanese counterpart application No. 2004-197849.
Japanese Office Communication dated Apr. 10, 2007 in Japanese counterpart application No. 2004-197849.
Richardson, Thomas, J., Urbanke, Rudiger L.; “Efficient Encoding of Low Density Parity Check Codes”; IEEE Transactions Information Theory; vol. 47, No. 2; Feb. 2001; XP11027880; pp. 638-656.
EPO Communication dated Apr. 03, 2008 in European counterpart Application No. 04254014.6 corresponding to U.S. Appl. No. 10/883,338 filed Jul. 01, 2004 by Feng-Wen Sun et al.

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